EUROPEAN STEEL TECHNOLOGY AND APPLICATION DAYS 2017 - ESTAD 2017

Pulverized coal injection (PCI) and natural gas (NG) injection at the blast furnace are used to inject fuel into the reaction to maintain temperature control and chemistry of the charge. The reliability of the lances to perform repeatable and be retracted for ease of maintenance is critical for production efficiency at the blast furnace. Upgrading from 300 series lance to a more highly alloyed material with rare earth elements improves service life. Additionally, a case study to be presented with material selection improving heat recovery at a steel mill with upgraded metallurgy in recuperators.